Vitaly Kuznetsov ef40598098 selftests: kvm: fix sync_regs_test with newer gccs ... Commit 204c91eff7 ("KVM: selftests: do not blindly clobber registers in guest asm") was intended to make test more gcc-proof, however, the result is exactly the opposite: on newer gccs (e.g. 8.2.1) the test breaks with ==== Test Assertion Failure ==== x86_64/sync_regs_test.c:168: run->s.regs.regs.rbx == 0xBAD1DEA + 1 pid=14170 tid=14170 - Invalid argument 1 0x00000000004015b3: main at sync_regs_test.c:166 (discriminator 6) 2 0x00007f413fb66412: ?? ??:0 3 0x000000000040191d: _start at ??:? rbx sync regs value incorrect 0x1. Apparently, compile is still free to play games with registers even when they have variables attached. Re-write guest code with 'asm volatile' by embedding ucall there and making sure rbx is preserved. Fixes: 204c91eff7 ("KVM: selftests: do not blindly clobber registers in guest asm") Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2019-10-22 13:31:18 +02:00
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include	selftests: kvm: consolidate VMX support checks	2019-10-22 13:31:16 +02:00
lib	selftests: kvm: consolidate VMX support checks	2019-10-22 13:31:16 +02:00
s390x	KVM: selftests: Test invalid bits in kvm_valid_regs and kvm_dirty_regs on s390x	2019-09-04 15:38:05 +02:00
x86_64	selftests: kvm: fix sync_regs_test with newer gccs	2019-10-22 13:31:18 +02:00
.gitignore	selftests: kvm: synchronize .gitignore to Makefile	2019-10-22 13:31:13 +02:00
clear_dirty_log_test.c	kvm: introduce manual dirty log reprotect	2018-12-14 12:34:19 +01:00
config	selftests: kvm: Adding config fragments	2019-08-09 16:52:38 +02:00
dirty_log_test.c	KVM: selftests: Remove duplicate guest mode handling	2019-09-24 13:37:24 +02:00
kvm_create_max_vcpus.c	KVM: s390: add kselftests	2019-07-15 13:28:58 +02:00
Makefile	selftests: kvm: Fix libkvm build error	2019-10-03 12:07:58 +02:00